What is not considered a critical instrument for radiology?

In the context of infection control, critical instruments are those that penetrate soft tissue or bone and carry a high risk of infection transmission if not properly sterilized.

Beam alignment devices are not classified as critical instruments because they do not come into direct contact with patients' tissues. Instead, they are used to assist in positioning the x-ray beam correctly during radiographic procedures. Since beam alignment devices can be adequately disinfected with surface disinfection methods, they do not require the same sterilization processes as critical instruments.

In contrast, forceps, scalers, and needles do penetrate mucous membranes or skin and thus must be sterilized between uses to prevent potential infections. This distinction is essential for maintaining safe and effective infection control practices in a dental setting.